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Ada Programming/Attributes/'Rounding

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X'Rounding(Y) is an Ada attribute where X is any floating-point type and Y is any instance of that type. This attribute represents the closest integer value to Y. If Y is exactly between two integer values (e.g. 1.5), then the result is the number farthest away from zero (e.g. 1.5 => 2.0, -1.5 => -2.0).